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Journal Articles

Basic study on remote analysis for next generation fuel by combination of laser induced breakdown spectroscopy (LIBS) and ablation initiated resonance absorption spectroscopy (AIRAS)

Wakaida, Ikuo; Akaoka, Katsuaki; Oba, Masaki; Maruyama, Yoichiro; Miyabe, Masabumi; Otobe, Haruyoshi; Niki, Hideaki*

Kaku Busshitsu Kanri Gakkai (INMM) Nihon Shibu Dai-30-Kai Nenji Taikai Rombunshu (CD-ROM), 9 Pages, 2010/01

In Japan Atomic Energy Agency, basic study on remote analysis by combination of LIBS for impurity measurement and AIRAS for isotope measurement is performed to apply rapid and on-site analysis of next generation fuel. For the impurity measurement of the sample with the matrix of Lanthanide or Uranium oxide which has complex spectrum structure, detection linearity to % order and the detection limit of order 100 ppm are obtained by the optimization of the measurement conditions of the delay time, gas pressure and by the deconvolution of the spectrum. For the isotope analysis, the laser system specialized for the resonance spectroscopy by frequency stabilized semiconductor tunable laser has been developed. And under the low pressure rare gas condition, spectrum resolution of 800 MHz is measured and the detection of $$^{235}$$U in Natural Uranium is realized.

Oral presentation

Development of laser remote analysis for nuclear fuel materials, 1; Laser induced breakdown spectroscopy and laser ablation resonance spectroscopy, Introduction

Wakaida, Ikuo; Akaoka, Katsuaki; Oba, Masaki; Miyabe, Masabumi; Maruyama, Yoichiro; Niki, Hideaki*

no journal, , 

Direct and remote analysis of impurity and isotope ratio in nuclear fuel materials is developing without any chemical process by laser induced breakdown spectroscopy and laser ablation resonance spectroscopy. The purpose of this study and some recent results are discussed. In the breakdown spectroscopy, the basic process of plasma emission and the effects of the double pulse injection will be reported. In the impurity measurements of Cu in the matrix of Gadlinium, the linearity of the atomic emission to the impurity density was confirmed and the detection limit lower than 100ppm was obtained. In the resonance spectroscopy, the high precision tunable laser system for the resonance spectroscopy was developed and odd isotopes of Gadlinium were separately detected by laser ablation resonance absorption spectroscopy.

Oral presentation

Remote analysis for nuclear fuel materials by laser induced breakdown spectroscopy and laser abration resonance spectroscopy

Wakaida, Ikuo; Oba, Masaki; Akaoka, Katsuaki; Miyabe, Masabumi; Maruyama, Yoichiro; Niki, Hideaki*

no journal, , 

By the combination of laser induced breakdown spectroscopy and laser ablation resonance spectroscopy, we are developing the remote analysis of impurity and isotope ratio in the nuclear fuel material. The purpose of this study and some recent results are discussed. In the breakdown spectroscopy, the basic process of plasma emission was characterized and the linearity of the atomic emission strength to the impurity density was confirmed in the measurements of Cu in the matrix of Gadlinium. In the isotope ratio measurement, high resolution observation conditions were performed and odd isotopes of Gadlinium were separately detected by laser ablation resonance absorption spectroscopy.

Oral presentation

Development of remote analysis for nuclear fuel materials by combination of LIBS and Ablation Initiated Resonance Absorption Spectroscopy (AIRAS)

Wakaida, Ikuo; Akaoka, Katsuaki; Oba, Masaki; Maruyama, Yoichiro; Miyabe, Masabumi; Otobe, Haruyoshi; Niki, Hideaki*

no journal, , 

By the combination of laser induced breakdown spectroscopy and laser ablation initiated resonance spectroscopy, we are developing the remote analysis for impurity and isotope ratio measurement on the nuclear fuel material. The purpose of this study and some recent results are discussed. In the breakdown spectroscopy, some differences of the spatial characteristics of double pulse LIBS and the conventional single pulse LIBS, importance of the optimized power balance of breakdown and ablation for effective plasma emission, and the performance of impurity measurement of order 100 ppm are shown. In the isotope ratio measurement, high resolution observation conditions are performed in the measurement of Gadolinium isotopes.

Oral presentation

Development of laser remote analysis, 1; Basic characteristics on double pulse LIBS

Wakaida, Ikuo; Akaoka, Katsuaki; Oba, Masaki; Maruyama, Yoichiro; Miyabe, Masabumi; Otobe, Haruyoshi; Niki, Hideaki*

no journal, , 

In the Fast Reactor nuclear fuel cycle systems of the next generation, the development of the low decontaminated fuel is required. But the conventional chemical analysis has some problems of radiation exposure, radioactive analysis waste, and high analysis cost. To contribute the remote analysis, we are developing the simultaneous measurement of the impurity and the isotope ratio by the combination of LIBS and Ablation Initiated Resonance Absorption Spectroscopy. To achieve higher sensitivity, the characteristics of double pulse LIBS are studied. The spatial characteristics of the plasma emission are measured and compared with single configuration. The emission enhancement depended on the observed position is clarified, and the enhancement of 10 is obtained. The rapid increase of the emission intensity is observed in lower ablation power, but saturated in higher intensity. This shows the requirement of the optimized power balance for an effective enhancement.

Oral presentation

Technical development of non-contacting remote analysis for nuclear fuel materials by combination of LIBS and ablation resonance absorption spectroscopy

Wakaida, Ikuo; Akaoka, Katsuaki; Oba, Masaki; Maruyama, Yoichiro; Miyabe, Masabumi; Otobe, Haruyoshi; Kato, Masaaki; Niki, Hideaki*

no journal, , 

By the combination of laser induced breakdown spectroscopy and laser ablation resonance spectroscopy, we are developing the non-contacting remote analysis for the measurements of impurities and isotopes in a nuclear fuel materials. The purpose of the study and some recent results are discussed. The ablated amount was estimated by the microscope observation of the crater. Plasma expansion process was observed to be well in agreement with the blast wave model. In the characteristics of double pulse LIBS, it was confirmed that the strong emission was maintained even in the atmosphere pressure. For the impurity analysis, deconvolution technique made it possible to determine the impurity component from an overlapped spectrum. The performance of impurity measurement of order 100 ppm in uranium oxide was shown. In the isotope measurement, high resolution observation conditions were performed, and applying to uranium oxide, isotope detection of $$^{235}$$U in natural uranium was succeeded.

Oral presentation

Development of laser remote analysis; Basic characteristics in impurity analysis of uranium oxide by Laser Induced Breakdown Spectroscopy (LIBS), 2

Wakaida, Ikuo; Akaoka, Katsuaki; Oba, Masaki; Maruyama, Yoichiro; Miyabe, Masabumi; Otobe, Haruyoshi; Kato, Masaaki; Niki, Hideaki*

no journal, , 

Basic study of the quick, simple and onsite remote analysis without chemical separation is required for the analysis of Low-decontaminated TRU fuel for FBR of the next generation. LIBS will be one of the useful techniques for the remote analysis, and we are studying about the emission characteristics such as time-spatial phenomenon and laser power dependence in the uranium oxide contained with calcium impurity. The influence by the change of plasma temperature will be able to control by the selection of the emission energy level. The strength of the impurity emission is estimated by the deconvolution technique and calibration characteristic is obtained. By the comparison with the standard deviation, the detection limit of 70 ppm ($$sigma$$) in the impurity analysis of uranium oxide fuel will be determined.

Oral presentation

Basic study on remote analysis for next generation fuel by combination of Laser Induced Breakdown Spectroscopy (LIBS) and Ablation Initiated Resonance Absorption Spectroscopy (AIRAS)

Wakaida, Ikuo; Akaoka, Katsuaki; Oba, Masaki; Maruyama, Yoichiro; Miyabe, Masabumi; Otobe, Haruyoshi; Niki, Hideaki*

no journal, , 

In Japan Atomic Energy Agency, basic study on remote analysis by combination of LIBS for impurity measurement and AIRAS for isotope measurement is performed to apply rapid and on-site analysis of next generation fuel. For the impurity measurement of the sample with the matrix of Lanthanide or Uranium oxide which has complex spectrum structure, detection linearity to % order and the detection limit of order 100ppm are obtained by the optimization of the measurement conditions of the delay time and gas pressure and by the deconvolution of the spectrum. For the isotope analysis, the laser system specialized for the resonance spectroscopy by frequency stabilized semiconductor tunable laser has been developed. And under the low pressure rare gas condition, spectrum resolution of 800MHz is measured and the detection of $$^{235}$$U in Natural Uranium is realized.

Oral presentation

Basic study on remote analysis for low-decontaminated TRU fuel by combination of laser induced breakdown spectroscopy (LIBS) and ablation initiated resonance absorption spectroscopy (AIRAS)

Wakaida, Ikuo; Akaoka, Katsuaki; Oba, Masaki; Maruyama, Yoichiro; Miyabe, Masabumi; Otobe, Haruyoshi; Niki, Hideaki*; Katsumura, Soichiro; Seya, Michio

no journal, , 

Basic study on remote analysis by combination of LIBS and AIRAS were performed. For the impurity measurement, detection linearity to % order, the detection limit of order 100 ppm and the error of about $$pm$$3% based on statistical fluctuation were obtained by the use of Lanthanide or Uranium oxide sample. For the isotope analysis, by using the laser system specialized for the resonance spectroscopy, spectrum resolution of 800 MHz was performed and $$^{235}$$U in natural uranium was clearly detected. These results suggest that the combination of LIBS and AIRAS will be one of the alternative techniques applicable for the safeguards analysis of next generation fuels without neutron detection by $$^{3}$$He gas. In the next stage, we are going to apply this remote analysis to the measurement of Pu in MOX fuel. In this program, we develop the compact system inside the grove-box and will plan to accomplish the elemental and isotopic analysis of Pu and U within several ten minutes.

Oral presentation

Development of laser remote analysis by combination of LIBS and ablation initiated resonance absorption spectroscopy for nuclear fuel materials

Wakaida, Ikuo; Akaoka, Katsuaki; Miyabe, Masabumi; Oba, Masaki; Maruyama, Yoichiro; Otobe, Haruyoshi; Niki, Hideaki*

no journal, , 

Basic study on remote analysis by combination of LIBS and Ablation Initiated Resonance Absorption Spectroscopy (AIRAS) were performed to apply for a rapid and on-site analysis of next generation nuclear fuel materials contained with miner actinides. For the impurity measurement, detection linearity to % order and the sensitivity of order 100ppm were obtained by LIBS in the sample of the matrix of lanthanide or uranium oxide. For the isotope analysis, the laser system specialized for the resonance spectroscopy by frequency stabilized semiconductor tunable lasers had been developed, and $$^{235}$$U in natural uranium oxide was clearly detected. These results suggest that the combination of LIBS and AIRAS will be one of the alternative techniques applicable to the safeguards analysis for next generation fuels without using of $$^{3}$$He gas neutron detector.

Oral presentation

Laser remote spectroscopy for next generation nuclear fuel, 1; Background and summary

Wakaida, Ikuo; Akaoka, Katsuaki; Oba, Masaki; Maruyama, Yoichiro; Miyabe, Masabumi; Otobe, Haruyoshi; Niki, Hideaki*

no journal, , 

In the Fast Reactor nuclear fuel cycle system of the next generation, the development and utilization of the low-decontaminated nuclear fuel will be strongly required from the viewpoint of sustainable use of nuclear fuel resources, reduction of the environmental burden, simplification of the reprocessing process and resistance to nuclear proliferation. In JAEA, we are now developing the remote analytical technique for simultaneous measurement of the element, impurity and the isotope ratio by the combination of Laser Induced Breakdown Spectroscopy (LIBS) and resonance absorption spectroscopy for ablated plume. In this presentation, some topical results on the conventional LIBS of the detection limit of order 100 ppm, double pulse LIBS for higher sensitivity and the performance in isotopic measurement of the detection limit of 0.3 % and the success to detect $$^{235}$$U in natural uranium, will be described.

Oral presentation

Development of quick analysis for next generation nuclear fuel by laser remote spectroscopy

Wakaida, Ikuo; Akaoka, Katsuaki; Oba, Masaki; Maruyama, Yoichiro; Miyabe, Masabumi; Otobe, Haruyoshi; Kato, Masaaki; Oba, Hironori; Niki, Hideaki*; Ikeda, Yuji*; et al.

no journal, , 

"Development of laser remote analysis for low-decontaminated TRU fuel" entrusted to Japan Atomic Energy Agency by the MEXT has been studied by combination of laser induced breakdown spectroscopy for elemental analysis and resonance absorption spectroscopy for isotope analysis. In this presentation, results on elemental analysis of the detection limit of order 100 ppm and the performance on isotopic measurement of the detection limit of 350 ppm success to detect $$^{235}$$U in natural uranium are summarized. And the new program of "Development of laser remote analysis for next generation nuclear fuel and demonstration study by MOX sample" will be introduced and temporal results will be described.

Oral presentation

Laser remote analysis for next generation nuclear fuel, 1; Summary of results and future scope

Wakaida, Ikuo; Akaoka, Katsuaki; Oba, Masaki; Maruyama, Yoichiro; Miyabe, Masabumi; Otobe, Haruyoshi; Kato, Masaaki; Oba, Hironori; Niki, Hideaki*; Ikeda, Yuji*; et al.

no journal, , 

Laser remote analysis for next generation nuclear fuel has been studied by combination of laser induced breakdown spectroscopy (LIBS) for elemental analysis and resonance absorption spectroscopy for isotope analysis. For elemental analysis in Uranium oxide, detection limit of 100 ppm (Ca, etc.) or 300 ppm (Lanthanide) and detection linearity up to several 10% are performed. For higher sensitivity, emission intensity by double pulse LIBS will be realized several ten times higher than that of conventional LIBS. The performance on isotopic measurement of the detection limit of 300 ppm success to detect $$^{235}$$U in natural uranium is summarized. And the new program of "Development of laser remote analysis for next generation nuclear fuel and applied study by MOX sample" will be introduced and temporal results will be described.

Oral presentation

Development of laser remote analysis for nuclear fuel materials; Outline of the development and recent results

Wakaida, Ikuo; Maruyama, Yoichiro; Miyabe, Masabumi; Akaoka, Katsuaki; Oba, Masaki; Tampo, Motonobu; Oba, Hironori; Otobe, Haruyoshi; Kato, Masaaki; Niki, Hideaki*; et al.

no journal, , 

"Development of laser remote analysis for next generation nuclear fuel and applied study by MOX sample" entrusted to Japan Atomic Energy Agency by the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT) has been studied by combination of laser induced breakdown spectroscopy (LIBS) for elemental analysis and resonance absorption spectroscopy for isotope analysis. In this presentation, recent results on LIBS for elemental analysis by the high resolution spectrometer, co-linear double pulse LIBS for higher sensitivity and simultaneous measurement of isotope ratio by ablation initiated resonance absorption spectroscopy are generally discussed. And will be also discussed on recent trials of microwave assist LIBS and liquid phase LIBS.

Oral presentation

Development of laser remote analysis for nuclear fuel materials, 1; Summary and topics of research

Wakaida, Ikuo; Akaoka, Katsuaki; Oba, Masaki; Maruyama, Yoichiro; Miyabe, Masabumi; Tampo, Motonobu; Oba, Hironori; Otobe, Haruyoshi; Kato, Masaaki; Ikeda, Yuji*; et al.

no journal, , 

The research program of "Development of laser remote analysis for next generation nuclear fuel and demonstration study by MOX sample" will be introduced and recent topical results will be described. For elemental analysis in uranium oxide sample, laser induced breakdown spectroscopy (LIBS) using by the high resolution spectrometer was performed and good linearity and low detection limit were accomplished without deconbolution analysis. For a powder phase sample, good performance was obtained by compressed molding powder. Basic characteristics of microwave assisted LIBS were studied, and atomic emission of higher intensity and longer emission time were realized. In isotope analysis moving characteristics of ablate plume were observed and high resolution and high sensitivity was simultaneously achieved. For the application of liquid phase sample, high sensitivity like ICP-AES was successfully realized by LIBS using ultra thin liquid flow.

Oral presentation

Application of laser based spectroscopy for nuclear fuel materials and environmental trace analysis

Wakaida, Ikuo; Maruyama, Yoichiro; Miyabe, Masabumi; Akaoka, Katsuaki; Oba, Masaki; Tampo, Motonobu; Oba, Hironori; Otobe, Haruyoshi; Takano, Masahide; Kato, Masaaki; et al.

no journal, , 

The background and recent results of "Development of laser remote analysis for next generation nuclear fuel and applied study by MOX sample" entrusted to Japan Atomic Energy Agency by the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT) will be summarized. Measurement accuracy in elemental analysis by laser induced breakdown spectroscopy and the analysis of the expansion phenomena of ablation plume by resonance fluorescence spectroscopy will be globally discussed. Application for the inner monitoring in the accident of Fukushima power plant and an environmental monitoring of $$^{90}$$Sr by semiconductor laser resonance ionization spectroscopy will be also introduced.

Oral presentation

Development of laser remote analysis for nuclear fuel materials, 2-1; Outline and present results of research and development

Wakaida, Ikuo; Akaoka, Katsuaki; Oba, Masaki; Maruyama, Yoichiro; Miyabe, Masabumi; Tampo, Motonobu; Oba, Hironori; Otobe, Haruyoshi; Kato, Masaaki; Ikeda, Yuji*; et al.

no journal, , 

The background and recent results of the R&D titled of "Development of laser remote analysis for next generation nuclear fuel and applied study by MOX sample" entrusted to Japan Atomic Energy Agency by the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT) will be summarized as the first speaker of the series lecture consist with five titles. Measurement accuracy in elemental analysis by laser induced breakdown spectroscopy (LIBS), characteristics of microwave assisted LIBS, LIBS for liquid solution by ultra-thin liquid flow, and the analysis of the expansion phenomena of ablation plume by resonance fluorescence spectroscopy will be globally introduced. Application for the inner monitoring in the accident of Fukushima power plant will be also discussed.

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